After agreeing a deal worth close to £50 million which will send David Luiz to PSG, the Blues seem to have set their sights on a world-class midfielder to replace the Brazilian.
Chelsea are reported to have already agreed a deal for Diego Costa and plan on recalling Thibaut Courtois but Jose Mourinho is apparently looking to Pogba, Koke or Paulinho to fill a void in midfield. Apart from Matic, the current crop of midfielders future's are all in doubt and the Blues may want to act fast and act early to lock up one of their targets.
A deal for Koke would be tough, especially with Chelsea seeming to have secured two of Atlético's stars for next season. Paul Pogba has stated he would like to remain in Italy but there have been hints of a possible move away from Juventus. Paulinho's rough first season with London rivals Spurs may result in them wanting to offload for close to double the £17 million they initally spent.